hotchkiss



I B.. M. HQTCHKISS. y MAGHINBFOR MAKING TUBES AND STRIPS 0I INDIA RUBBER.

Patented July 12, 1870.-

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nunnrrT `1n..:erOT-cr-rrrss, Or NAUGATUGK, OONNEOTIGUT, `.AssIGNea TO GooDYEARs INDIA-RUBBER GLOVE MANUFACTURING COMPANY, OF SAME PLAGE.

12mm Patent No. 105,335, dans .nay-12, 1ero.

rmpnovnmnn'r muecmrms son G Tmasrs Anm snaps or mman-:sam

The Schedule referred to in these Letton Patent and making part ofthe same.

i correct description thereof'. V

, In Letters'Patent No'..37,112, granted December 9,

' `1861?, a machine is described for making hose or coveringtelegraph-wire. Inl this machine diilicnlty is ex Vpcrienced from the India rubber beingiforced ont, in the form of a thin sheet, at the joint between the halves oi' the cyiinder containing the screw. `Besides this, when the cylinder becomes obstructed, as is frequently the case, considerable time is lostlin takin' the cylinder apart, and the great end pressure to which the revolvin screw is subjected, as it forces along the India .ru ber, causes the. end bearings to be rapidly worn ont. i

My invention is an improvement upon the aforesaid machine, and consists in a-cylindrical case and removable end cap, in combination with a feedingscrew having an end bearing, and removable en'dwise,

so that there -will vnot beanyjoint in the cylinder through which the rubber can be forced. The screw is supported against the endwise thrust, and can be taken ont with facility for cleaning or the removal of obstructions; I also make use of a die, formed with a corrugated interior surface, so as to give to the rubber a beaded ce upon its surface, which greatly improves thclooks. i y vI also use a removable die and changeablev core, so as to make tubes or strips of any desired size or sectional shape. In the drawing- Figure 1 is a longitudinal section of my said'rna- Figure 5 is a plan of the' .machine. The cylinder a is madeof one piece of metal, bored out to receive the screw b, and around ,the cylinder a is a jacket or box, by means ofwbich the cylinder a may be. heated by steam or otherwise.

The screw b is entered endwise into the cylinder a, and its shaft if, at the rear end, passes through the driving-wheei or pulley and rests in a socket, @that .is in or upon a cross-name, f, connected by the braces or slings g to the cylindera..

The shaft b of the screw `b is connected by'a screw or key to the wheel d, so astoberemovablaendwisa,

with facility from the cylinder and wheel, and the socket e takes the endwise pressure ina manner sim--.

ilar to the center of a lathefmandrel.

The India rubber is supplied at the, opening h., in

pieces of a. convenient sizeand ',is pressed forward while in the groove of the screw by the rotation of said screw, so asto be forced` out through the die in a strip or tube of the shape of said die.

Thelmovable end cap k`is screwed 'into the end of the cylinder` a, and isadapted to receive the die i, which `die c' .is screwed into the cap k, so as tobe changed forV making 'different articles, and the interior of said die `is to be grooved with fine groov in order that a ribbed surface may be made upont tube or strip.

The com, o, for making the interior of the` pipe or tube, is formed with wings, 2 2, that causethe core to maintain a central position within the die, and the edges of the rubber,'that come in contact within the. die after passing these wings, are united by the pressure within the contracted Opening that gives-the 4final shape to the issuing strip OrV tube.

I claim as my inventiou- 1.-'.lhe cylinder a., in combination -witlr the screw b, wheel d, and bearingje, the-parts being arranged as specified, so that the screw b can be removed endwise with facility, as set fort-h.

2. The removable ca-p k and die i, in combination with'the screw b, cylinder a, and core o, as aud'for the purposes specified.

3. The die ,formed wltha grooved interior surface, for impart-ing to the surface or' the India rubber issning from said die a ribbed appearance, as specified.

Signed by me this 26th day of January, A. D.

1870.4 BUB-RITT M. IEIOTOIEIKISS.

Witnesses: y l

Cass. H. SMITH, GEO. T. PrNcKNEY. 

